Items where Author is "Putra, Hafiz Kurnia"
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Thesis
Putra, Hafiz Kurnia (2021) Analisis Pengaruh Pencampuran Pelumas Bekas terhadap Nilai Sulfur Batubara di PT. Cahaya Bumi Perdana Desa Tumpuk Tengah Kecamatan Talawi Kota Sawahlunto. Bachelor/Skripsi thesis, Universitas Negeri padang.